When we bought our house in Miami,the yard was infested with fleas from all of the outdoor dogs next door on two sides. Our puppy, Muggsy, was also infested with fleas when we got him. His early exposure to fleas has caused him to have an allergy to flea bites that is off the charts. In the beginning, he scratched constantly & was a mess from hot spots. I had used Advantix & fed him Iams. Doh

Then I saw the light

FL is year round bug central. I don't use pesticides. I have a flea free dog. Yes, it is possible

Muggsy's friends all get monthly spot ons & their yards are treated with pesticides. They still have fleas & other itchies.
To get Muggsy flea-free initially took a lot of elbow grease, but it is possible & totally worth it. Once you have your environment under control, it's not so much work.
A three pronged approach is necessary.. yard, house & dog (inside & out)
A dog with a healthy immune system is not attractive to fleas, or so I've been told. I feed Muggsy organic food & bottled water. I bathe Muggsy with an herbal shampoo/conditioner (from onlynaturalpet.com) & use an herbal bug repellent (Ackermans) on him. I've even stopped needing the spray repellent.
I flea comb him EVERY time we come back from being outside. I keep a bowl of soapy water at the ready. This entire summer, I've only combed 2 fleas off of him. Really!
Give your dog a bath with plain old Dawn dishwashing soap (the blue original one) or a good organic shampoo. Lather him up & leave it on for 10 minutes or so. Then flea comb while shampoo is still on, then rinse.
Green Light, Safer, and Concern are some brands of yard & house sprays. You can google 'organic pest control' to find options. I spray the lawn & bushes every few weeks in the summer. I keep the areas around the foundation of the house clear & sprinkle cedarcide along the foundation. I use Concern along the baseboards & backs of cabinets inside.
Food grade diatomaceous earth (DE) is useful. Onlynaturalpet has one mixed with herbs that is good to sprinkle in a pet's bedding. I cover Muggsy's beds with sheets &/or towels that I change every day & wash all of his bedding in hot water weekly. His mattress has cedar chips in it. You can actually even rub the onlynaturalpet DE right in the fur, but I haven't tried that.
I've heard that borax works also. I see you have carpeting. Sprinkle DE or borax on the carpeting & cloth furniture, let it stay(overnight if possible) & then vacuum.
Yes, I work & still find time to have fun too lol
Good luck!